JPS63158024U - - Google Patents

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Publication number
JPS63158024U
JPS63158024U JP1987049858U JP4985887U JPS63158024U JP S63158024 U JPS63158024 U JP S63158024U JP 1987049858 U JP1987049858 U JP 1987049858U JP 4985887 U JP4985887 U JP 4985887U JP S63158024 U JPS63158024 U JP S63158024U
Authority
JP
Japan
Prior art keywords
circuit
operational amplifier
emitter follower
time constant
follower circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1987049858U
Other languages
Japanese (ja)
Other versions
JPH0416503Y2 (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987049858U priority Critical patent/JPH0416503Y2/ja
Publication of JPS63158024U publication Critical patent/JPS63158024U/ja
Application granted granted Critical
Publication of JPH0416503Y2 publication Critical patent/JPH0416503Y2/ja
Expired legal-status Critical Current

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  • Filters And Equalizers (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図および第２図はこの考案に係る時定数回
路の実施例を示す回路図である。第３図Ａ〜Ｄは
、入力信号波形および出力波形図を示すものであ
る。第４図は従来例を示す回路図である。 １：入力端子、２：オペアンプ、３：オペアン
プ２の出力端、４：エミツタフオロワートランジ
スタ、５，８：時定数回路を構成する抵抗とコン
デンサ、６，７：直列回路を構成するダイオード
と抵抗、９：出力端子。 FIGS. 1 and 2 are circuit diagrams showing an embodiment of the time constant circuit according to this invention. 3A to 3D show input signal waveforms and output waveform diagrams. FIG. 4 is a circuit diagram showing a conventional example. 1: Input terminal, 2: Operational amplifier, 3: Output terminal of Operational amplifier 2, 4: Emitter follower transistor, 5, 8: Resistor and capacitor forming a time constant circuit, 6, 7: Diode forming a series circuit. Resistor, 9: Output terminal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] オペアンプと、このオペアンプの出力端子に接
続されたエミツタフオロワー回路と、このエミツ
タフオロワー回路のエミツタ側からオペアンプの
マイナス入力端に帰還をかける帰還回路と、エミ
ツタフオロワー回路のエミツタ側に接続されたＲ
Ｃ時定数回路と、このＲＣ時定数回路の中点とオ
ペアンプの出力端との間に接続されたダイオード
と抵抗とからなる直列回路とを備えていることを
特徴とする時定数回路。 An operational amplifier, an emitter follower circuit connected to the output terminal of this operational amplifier, a feedback circuit that applies feedback from the emitter side of this emitter follower circuit to the negative input terminal of the operational amplifier, and an emitter follower circuit of the emitter follower circuit. R connected to
1. A time constant circuit comprising: a C time constant circuit; and a series circuit comprising a diode and a resistor connected between the midpoint of the RC time constant circuit and the output end of an operational amplifier.
JP1987049858U 1987-04-03 1987-04-03 Expired JPH0416503Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987049858U JPH0416503Y2 (en) 1987-04-03 1987-04-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987049858U JPH0416503Y2 (en) 1987-04-03 1987-04-03

Publications (2)

Publication Number Publication Date
JPS63158024U true JPS63158024U (en) 1988-10-17
JPH0416503Y2 JPH0416503Y2 (en) 1992-04-14

Family

ID=30872699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987049858U Expired JPH0416503Y2 (en) 1987-04-03 1987-04-03

Country Status (1)

Country Link
JP (1) JPH0416503Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02195709A (en) * 1989-01-24 1990-08-02 Nec Ic Microcomput Syst Ltd Time constant circuit
JP2009077027A (en) * 2007-09-19 2009-04-09 Shihen Tech Corp Signal delay circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02195709A (en) * 1989-01-24 1990-08-02 Nec Ic Microcomput Syst Ltd Time constant circuit
JP2009077027A (en) * 2007-09-19 2009-04-09 Shihen Tech Corp Signal delay circuit

Also Published As

Publication number Publication date
JPH0416503Y2 (en) 1992-04-14

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